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Finding the Fourth Proportional to 88,989.52, 122,797.20 and 53,172.40

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Solution

The fourth proportional to 88,989.52, 122,797.20 and 53,172.40 is: 73,372.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,989.52 : 122,797.20 = 53,172.40 : x
  2. Step 2: Convert to fraction form
    88,989.52/122,797.20 = 53,172.40/x
  3. Step 3: Cross multiply
    88,989.52x = 122,797.20 × 53,172.40
  4. Step 4: Simplify right side
    88,989.52x = 6,529,421,837.28
  5. Step 5: Solve for x
    x = 6,529,421,837.28/88,989.52
  6. Step 6: Final answer
    x = 73,372.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.